Finding the Third Proportional to 811,434 and 1,261,401

Step by Step Solution

1. Step 1: Write the proportion equation
   811,434 : 1,261,401 = 1,261,401 : x
2. Step 2: Convert to fraction form
   811,434/1,261,401 = 1,261,401/x
3. Step 3: Cross multiply
   811,434x = 1,261,401 × 1,261,401
4. Step 4: Simplify right side
   811,434x = 1,591,132,482,801
5. Step 5: Solve for x
   x = 1,591,132,482,801/811,434
6. Step 6: Final answer
   x = 1,960,889.59